Peptides are short chains of amino acids — smaller than proteins, but built the same way. Your body already makes and uses them constantly, for everything from healing to hormone signaling. What varies is which specific peptide, at what dose, for what purpose.
That’s a very different starting point than most of the marketing around them suggests. There’s no single “peptide effect” — a compound aimed at recovery works nothing like one aimed at metabolic support, and treating them as interchangeable is where most of the hype comes from. Fitstar’s protocols are built peptide-by-peptide against your actual goals, not off a generic stack.